Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s00360-018-1168-z |
Seasonal variation in energy expenditure in a rodent inhabiting a winter-rainfall desert | |
Rimbach, Rebecca1; Blanc, Stephane2; Zahariev, Alexandre2; Gatta, Maria1,3; Pillay, Neville1; Schradin, Carsten1,2 | |
通讯作者 | Rimbach, Rebecca |
来源期刊 | JOURNAL OF COMPARATIVE PHYSIOLOGY B-BIOCHEMICAL SYSTEMS AND ENVIRONMENTAL PHYSIOLOGY
![]() |
ISSN | 0174-1578 |
EISSN | 1432-136X |
出版年 | 2018 |
卷号 | 188期号:5页码:877-888 |
英文摘要 | Animals that spend more energy than they obtain risk entering allostatic overload, reducing survival and fitness. They are predicted to adjust their daily energy expenditure (DEE) during periods of food scarcity. Adjustments of DEE to changes in food availability have been well-studied in species in temperate zones during winter, but less so in species enduring seasonal droughts. Likely mechanisms regulating DEE involve adjustments of activity and maintenance metabolism. Species that experience seasonal droughts and changes in food availability, like the African striped mouse (Rhabdomys pumilio), are appropriate model organisms to study the regulation of seasonal changes of DEE. We quantified DEE using the ’doubly labelled water’ method, measured resting metabolic rate (RMR), and concomitantly determined activity levels using all-day focal observations of 69 free-living striped mice in the cold moist season with high food availability and the hot dry season with low food availability. Striped mice decreased their DEE in the food scarce dry season using multiple mechanisms, especially reductions in RMR, and reduced overall physical activity. This was further facilitated passively by reduced thermoregulatory costs. Our study demonstrates that animals reduce DEE via active and passive mechanisms in food-restricted environments, and highlights that several environmental factors should be considered simultaneously when aiming to understand how animals cope with harsh environments. |
英文关键词 | Drought Eco-physiology Energetics Field metabolic rate Physical activity level Phenotypic flexibility |
类型 | Article |
语种 | 英语 |
国家 | South Africa ; France ; Netherlands |
收录类别 | SCI-E |
WOS记录号 | WOS:000443432900013 |
WOS关键词 | RESTING METABOLIC-RATE ; MOUSE RHABDOMYS-PUMILIO ; DOUBLY-LABELED WATER ; AFRICAN STRIPED MICE ; FOOD AVAILABILITY ; BODY-COMPOSITION ; SMALL MAMMALS ; SUCCULENT KAROO ; HOUSE MICE ; THERMOREGULATION |
WOS类目 | Physiology ; Zoology |
WOS研究方向 | Physiology ; Zoology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/210793 |
作者单位 | 1.Univ Witwatersrand, Sch Anim Plant & Environm Sci, Private Bag 3, ZA-2050 Johannesburg, South Africa; 2.UNISTRA, CNRS, IPHC, 23 Rue Loess, F-67200 Strasbourg, France; 3.Leiden Univ, Inst Environm Sci, POB 9518, NL-2300 RA Leiden, Netherlands |
推荐引用方式 GB/T 7714 | Rimbach, Rebecca,Blanc, Stephane,Zahariev, Alexandre,et al. Seasonal variation in energy expenditure in a rodent inhabiting a winter-rainfall desert[J],2018,188(5):877-888. |
APA | Rimbach, Rebecca,Blanc, Stephane,Zahariev, Alexandre,Gatta, Maria,Pillay, Neville,&Schradin, Carsten.(2018).Seasonal variation in energy expenditure in a rodent inhabiting a winter-rainfall desert.JOURNAL OF COMPARATIVE PHYSIOLOGY B-BIOCHEMICAL SYSTEMS AND ENVIRONMENTAL PHYSIOLOGY,188(5),877-888. |
MLA | Rimbach, Rebecca,et al."Seasonal variation in energy expenditure in a rodent inhabiting a winter-rainfall desert".JOURNAL OF COMPARATIVE PHYSIOLOGY B-BIOCHEMICAL SYSTEMS AND ENVIRONMENTAL PHYSIOLOGY 188.5(2018):877-888. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。